# 0.8.2
* Update missing docs.rs information.
# 0.8.1
* **Bug Fixes:**
* Fixed collision detection to only count true collisions (same template ID, different definition)
- Previously, any template retransmission was incorrectly counted as a collision
- RFC 7011 (IPFIX) and RFC 3954 (NetFlow v9) recommend sending templates multiple times at startup for reliability
- Retransmitting the same template (same ID, identical definition) is now correctly handled as a template refresh
- Only templates with the same ID but different definitions are now counted as collisions
- Uses `LruCache::peek()` to check existing templates without affecting LRU ordering
* **Impact:** Collision metrics will now accurately reflect actual template conflicts
* **Migration:** No code changes required - metrics will automatically be more accurate
# 0.8.0
* **Security Enhancements:**
* Enhanced template validation with three layers of protection:
- Field count limits (configurable, default 10,000)
- Total size limits (default u16::MAX, prevents memory exhaustion)
- Duplicate field detection (rejects malformed templates)
* Templates validated before caching; invalid templates rejected immediately
* Added public `is_valid()` methods for IPFIX templates
* Removed unsafe unwrap operations in field parsing
* Improved buffer boundary validation
* **Bug Fixes:**
* Fixed compilation error in `parse_bytes_as_netflow_common_flowsets()`
* Fixed unreachable pattern warning in `NetflowCommon::try_from()`
* Fixed `max_error_sample_size` configuration inconsistency
- Added `max_error_sample_size` field to `Config` struct
- Now properly propagates from builder to V9Parser and IPFixParser
- Previously, builder setting only affected main parser, not internal parsers
- `with_max_error_sample_size()` now correctly updates all parser instances
* **BREAKING CHANGES:**
* `parse_bytes()` now returns `ParseResult` instead of `Vec<NetflowPacket>`
- Preserves successfully parsed packets even when errors occur mid-stream
- Access packets via `.packets` field and errors via `.error` field
- Use `.is_ok()` and `.is_err()` to check parsing status
* `NetflowPacket::Error` variant removed from the enum
- Errors are no longer inline with successful packets
- Use `iter_packets()` which now yields `Result<NetflowPacket, NetflowError>`
- Or use `parse_bytes()` and check the `.error` field of `ParseResult`
* `iter_packets()` now yields `Result<NetflowPacket, NetflowError>` instead of `NetflowPacket`
- Change from: `for packet in iter { match packet { NetflowPacket::Error(e) => ... } }`
- Change to: `for result in iter { match result { Ok(packet) => ..., Err(e) => ... } }`
* `FlowSetBody::NoTemplate` variant changed from `Vec<u8>` to `NoTemplateInfo` struct
- Provides template ID, available templates list, and raw data for debugging
* See README for detailed migration examples
* **New Features:**
* **AutoScopedParser** - RFC-compliant automatic template scoping
- V9: `(source_addr, source_id)` per RFC 3954
- IPFIX: `(source_addr, observation_domain_id)` per RFC 7011
- Prevents template collisions in multi-router deployments
* **RouterScopedParser** - Generic multi-source parser with per-source template caches
* **Template Cache Metrics** - Performance tracking with atomic counters
- Accessible via `v9_cache_stats()` and `ipfix_cache_stats()`
- Tracks hits, misses, evictions, collisions, expirations
* **Template Event Hooks** - Callback system for monitoring template lifecycle
- Events: Learned, Collision, Evicted, Expired, MissingTemplate
* **Documentation:**
* New "Template Management Guide" in README covering multi-source deployments
* RFC compliance documentation (RFC 3954 for V9, RFC 7011 for IPFIX)
* New examples: `template_management_demo.rs`, `multi_source_comparison.rs`, `template_hooks.rs`
* Updated UDP listener examples to use AutoScopedParser/RouterScopedParser
* Added CI status, crates.io version, and docs.rs badges to README
# 0.7.4
* **Fixed critical bug in protocol.rs:**
* Fixed `impl From<u8> for ProtocolTypes` mapping that was off-by-one
* Added missing case for `0` → `ProtocolTypes::Hopopt`
* Fixed case `1` from `Hopopt` to `Icmp` (correct mapping)
* Fixed case `144` from `Reserved` to `Aggfrag` (correct mapping)
* Added missing case for `255` → `ProtocolTypes::Reserved`
* **Impact:** Protocol field will now correctly identify protocol types
* **Migration:** No code changes required, just update dependency version
# 0.7.3
* Fixed several re-export issues in documentation
* Corrected static_versions module imports
* All types now properly accessible through documented paths
* Documentation builds successfully with correct type links
# 0.7.2
* Re-exports `lru` crate at crate root for easier access
* Fixes broken doc links for LRU types in template cache documentation
# 0.7.1
* Added complete serde support for all public types
* Fixed missing Serialize/Deserialize derives on several structs
* All NetFlow packet types can now be serialized to JSON/other formats
* No breaking changes - purely additive
# 0.7.0
* **BREAKING CHANGE:** Removed packet-based and combined TTL modes
* Only time-based TTL is now supported via `TtlConfig`
* Simplified TTL API reduces complexity and maintenance burden
* Time-based TTL remains for handling template expiration
* Migration: Replace `TtlMode::Packets` with time-based `TtlConfig` (see README)
# 0.6.0
* Added Template TTL (Time-to-Live) support
* Templates can now expire based on time or packet count
* Configurable per-parser via builder pattern
* New `TtlConfig` and `TtlMode` types
* See README for usage examples